package com.triangle.cashier.widget;

import android.content.Context;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;

import com.triangle.cashier.R;
import com.triangle.cashier.bean.ActionItem;
import com.triangle.cashier.tools.TLog;

import java.util.ArrayList;

/**
 * 功能描述：标题按钮上的弹窗（继承自PopupWindow）
 */
public class ExpendPopup extends PopupWindow {
    // 列表弹窗的间隔
    protected final int LIST_PADDING = 0;
    // 坐标的位置（x、y）
    private final int[] mLocation = new int[2];
    private Context mContext;
    private int selectedIndex;
    // 实例化一个矩形
    private Rect mRect = new Rect();
    // 屏幕的宽度和高度
    private int mScreenWidth, mScreenHeight;

    // 判断是否需要添加或更新列表子类项
    private boolean mIsDirty;

    // 位置不在中心
    private int popupGravity = Gravity.NO_GRAVITY;

    // 弹窗子类项选中时的监听
    private OnItemOnClickListener mItemOnClickListener;

    // 定义列表对象
    private ListView mListView;

    // 定义弹窗子类项列表
    private ArrayList<ActionItem> mActionItems = new ArrayList<>();

    public ExpendPopup(Context context) {
        // 设置布局的参数
        this(context, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 0);
    }

    public ExpendPopup(Context context, int width, int height, int selectedIndex) {
        this.mContext = context;
        this.selectedIndex = selectedIndex;

        // 设置可以获得焦点
        setFocusable(true);
        // 设置弹窗内可点击
        setTouchable(true);
        // 设置弹窗外可点击
        setOutsideTouchable(true);

        // 获得屏幕的宽度和高度
        WindowManager wm = (WindowManager) context
                .getSystemService(Context.WINDOW_SERVICE);
        mScreenWidth = wm.getDefaultDisplay().getWidth();
        mScreenHeight = wm.getDefaultDisplay().getHeight();

        // 设置弹窗的宽度和高度
        setWidth(mScreenWidth * 40 / 720);
        setHeight(height);

        setBackgroundDrawable(new BitmapDrawable());

        // 设置弹窗的布局界面
        setContentView(LayoutInflater.from(mContext).inflate(
                R.layout.main_item_expend, null));
        setAnimationStyle(R.style.AnimHead);
        initUI();
    }

    /**
     * 初始化弹窗列表
     */
    private void initUI() {
        mListView = getContentView().findViewById(R.id.title_list);

        mListView.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int index,
                                    long arg3) {
                // 点击子类项后，弹窗消失
                dismiss();

                if (mItemOnClickListener != null)
                    mItemOnClickListener.onItemClick(mActionItems.get(index),
                            index, selectedIndex);
            }
        });
    }

    /**
     * 显示弹窗列表界面
     */
    public void show(View view) {
        // 获得点击屏幕的位置坐标
        view.getLocationOnScreen(mLocation);

        // 设置矩形的大小
        mRect.set(mLocation[0], mLocation[1], mLocation[0] + view.getWidth(),
                mLocation[1] + view.getHeight());

        // 判断是否需要添加或更新列表子类项
        if (mIsDirty) {
            populateActions();
        }

        // 显示弹窗的位置
        TLog.log("*******************************====" + mScreenWidth + "##############===" + getWidth());
        showAtLocation(view, popupGravity, mScreenWidth - (int) (getWidth() * 2.5) - LIST_PADDING, mRect.bottom - 20);
    }

    /**
     * 设置弹窗列表子项
     */
    private void populateActions() {
        mIsDirty = false;

        // 设置列表的适配器
        mListView.setAdapter(new BaseAdapter() {
            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                if (convertView == null) {
                    convertView = LayoutInflater.from(mContext).inflate(
                            R.layout.main_item_expend_item, parent, false);
                }
                TextView textView = ViewHolder.get(convertView, R.id.txt_title);
                textView.setTextSize(10);
                // 设置文本居中
                textView.setGravity(Gravity.CENTER_VERTICAL);
                textView.setWidth(mScreenWidth * 60 / 720);
                // // 设置文本域的范围
                // textView.setPadding(0, 10, 0, 10);
                // 设置文本在一行内显示（不换行）
                textView.setSingleLine(true);

                ActionItem item = mActionItems.get(position);

                // 设置文本文字
                textView.setText(item.mTitle);
                if (item.mDrawable != null) {
                    // 设置文字与图标的间隔
                    textView.setCompoundDrawablePadding(10);
                    // 设置在文字的左边放一个图标
                    textView.setCompoundDrawablesWithIntrinsicBounds(
                            item.mDrawable, null, null, null);
                }
                return convertView;
            }

            @Override
            public long getItemId(int position) {
                return position;
            }

            @Override
            public Object getItem(int position) {
                return mActionItems.get(position);
            }

            @Override
            public int getCount() {
                return mActionItems.size();
            }
        });
    }

    /**
     * 添加子类项
     */
    public void addAction(ActionItem action) {
        if (action != null) {
            mActionItems.add(action);
            mIsDirty = true;
        }
    }

    /**
     * 清除子类项
     */
    public void cleanAction() {
        if (mActionItems.isEmpty()) {
            mActionItems.clear();
            mIsDirty = true;
        }
    }

    /**
     * 根据位置得到子类项
     */
    public ActionItem getAction(int position) {
        if (position < 0 || position > mActionItems.size())
            return null;
        return mActionItems.get(position);
    }

    /**
     * 设置监听事件
     */
    public void setItemOnClickListener(
            OnItemOnClickListener onItemOnClickListener) {
        this.mItemOnClickListener = onItemOnClickListener;
    }

    /**
     * @author yangyu 功能描述：弹窗子类项按钮监听事件
     */
    public interface OnItemOnClickListener {
        void onItemClick(ActionItem item, int position, int selectedIndex);
    }

}